JP3047276B2 - Hairdryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the structure of a dryer for removing dust, moisture and acid in a refrigerant of a refrigeration cycle.

[0002]

2. Description of the Related Art In recent years, dryers have tended to be miniaturized in terms of handling and cost. A conventional dryer is disclosed in Japanese Patent Publication No. 42-2064.

Hereinafter, an example of the above-mentioned conventional dryer will be described with reference to the drawings. In FIG.
Reference numeral 1 denotes a cylindrical case. An inlet 1a through which the refrigerant flows and an outlet 1b through which the refrigerant flows are formed at both ends of the cylindrical case 1. The inlet 1a is connected to the refrigerant pipe 2 of the refrigeration system. The outlet 1b is connected to the capillary tube 3 of the refrigeration system. 3a is a capillary tube 3
At the tip. Inside the cylindrical case 1, there is an inlet side coarse filter 4 on the side of the inlet portion 1 a into which the refrigerant flows as shown by an arrow A, and the inlet side coarse filter 4 is fitted and fixed to the inner periphery of the cylindrical case 1. The fixing frame 5 is fixed to the entire periphery of the mounting frame 5 by welding or the like. As shown by the arrow B, there is also an outlet-side fine filter 6 on the outlet 1b side where the refrigerant flows out,
It is fixed to the mounting frame 7 like the inlet side coarse filter 4. A molecular sieve 8 is filled between the inlet side coarse filter 4 and the outlet side fine filter 6. The mesh of the inlet-side coarse filter 4 is coarse, and the outlet-side fine filter 6 has a fine mesh for catching the powder of the molecular sieve 8.

The operation of the dryer configured as described above will be described below. First, when the refrigeration apparatus is operated, the refrigerant flows from the refrigerant pipe 2 to the inlet 1 as shown by the arrow A.
It passes through a and enters the cylindrical case 1. After passing through the inlet side coarse filter 4, moisture and acid in the refrigerant are removed by the molecular sieve 8, and the refrigerant is discharged to the outlet side fine filter 6.
And enters the capillary tube 3 connected to the outlet 1b from the tip 3a, and flows as indicated by the arrow B. At this time, the powder generated by the breakage of the crystal of the molecular sieve 8 and the dust in the refrigerant are removed by the fine filter 6 on the outlet side.
And does not enter the capillary tube 3.

[0005]

However, in the above-mentioned conventional configuration, the diameter of the cylindrical case 1 is generally set to
Alternatively, the size is limited in terms of cost, and the outlet side fine filter 6 has a fine mesh, so that the powder of the molecular sieve 8 or the insoluble substance generated from the oil of the refrigerating apparatus is clogged, and the tip 3a of the capillary tube 3 also has There is a problem that the insoluble substance that has passed through the outlet side fine filter 6 is clogged.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a drier for a refrigerating apparatus having a high performance in which insoluble substances generated from molecular sieve powder or oil of a refrigerating apparatus are not clogged in a short time.

[0007]

According to a first aspect of the present invention, there is provided a dryer comprising: a cylindrical case having an inlet portion through which a refrigerant flows in and an outlet portion through which a refrigerant flows out; An inlet-side coarse filter mounted on the inlet side in the case, an outlet-side fine filter mounted on the outlet side in the cylindrical case, and a gap between the inlet-side coarse filter and the outlet-side fine filter. And a coarse partition plate having a refrigerant inflow shielding plate on the lower inlet-side coarse filter side, and above the coarse partition plate, between the inlet-side coarse filter and the outlet-side fine filter. And a filled molecular sieve.

Another dryer of the present invention is
In this dryer, a medium filter layer is provided below the coarse partition plate and between the inlet coarse filter and the outlet fine filter.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

According to the above-mentioned constitutions, insoluble substances generated from molecular sieve powder or oil of a freezing device are not clogged in a short period of time.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows a first embodiment of the present invention. Reference numeral 9 denotes a coarse partition plate, which moves vertically between an inlet-side coarse filter 4 and an outlet-side fine filter 6 in a cylindrical case 1. It is divided into. The coarse partition plate 9 has a refrigerant inflow shielding plate on the lower inlet side coarse filter side. further,
The upper portion of the coarse partition plate 9 is filled with a molecular sieve 8.

The operation of the dryer configured as described above will be described below. The refrigerant flows in from the inlet 1a, passes through the inlet side coarse filter 4, enters the upper side of the coarse partition plate 9, and the molecular sieve 8 removes moisture and acid. The refrigerant mainly flows through the space 10 because the lower space 10 of the coarse partition plate 9 has smaller refrigerant flow path resistance than the 8 parts of the molecular sieve. When the refrigerant flows through the space 10, the upper part of the refrigerant forms a laminar flow that flows faster than the lower part. Therefore, the powder generated by the breakage of the crystal of the molecular sieve 8 contained in the refrigerant and the dust in the refrigerant become a cylindrical case. 1 and does not enter the capillary tube 3.

According to the present embodiment, it is possible to provide a dryer in which insoluble substances generated from the powder of the molecular sieve 8 and the oil of the refrigerating apparatus accumulate in the lower part of the cylindrical case 1 and do not clog the capillary tube in a short period of time. it can.

FIG. 2 shows a second embodiment of the present invention, in which a space 10 of the first embodiment is provided with a middle filter layer 11.

In the above configuration, the refrigerant flows in from the inlet 1a, and the molecular sieve 8 removes water and acid. Since the medium filter layer 11 inserted into the lower space 10 of the coarse partition plate 9 has a smaller refrigerant flow path resistance than the molecular sieve 8 parts, the refrigerant mainly contains the medium filter layer 11.
Flows through. When the refrigerant flows through the medium filter layer 11, powder generated by breaking the crystal of the molecular sieve 8 contained in the refrigerant and dust in the refrigerant are removed from the medium filter layer 11.
Most of the liquid is removed and hardly enters the capillary tube 3.

FIG. 3 shows a third embodiment of the present invention, in which a coarse filter 4, an intermediate filter layer 11, and a molecular sieve 8 are sequentially mounted on the inlet 1a side of the cylindrical case 1 from the inlet 1a side. And an outlet-side fine filter 6 mounted on the outlet 1b side of the cylindrical case 1.

The refrigerant flowing from the inlet 1a passes through the medium filter layer 11, and most of the insoluble substances in the refrigerant are removed by the medium filter layer 11, and moisture and acids are further removed by the molecular sieve 8. Further, since the fine insoluble substance is removed by the outlet side fine filter 6, it hardly enters the capillary tube 3.

FIG. 4 shows a fourth embodiment of the present invention, in which the inlet side coarse filter 4, the molecular sieve 8, the medium filter layer 11, the cylindrical filter An outlet side fine filter 6 mounted on the outlet 1b side of the case 1 is arranged.

The refrigerant flows in from the inlet 1a, the moisture and the acid in the refrigerant are removed by the molecular sieve 8, and the powder and the dust in the refrigerant generated by breaking the crystal of the molecular sieve 8 contained in the refrigerant are removed by the intermediate filter. The layer 11 is largely removed and hardly enters the outlet side fine filter 6 or the capillary tube 3.

FIG. 5 shows a fifth embodiment of the present invention. Reference numeral 8 denotes a molecular sieve, and reference numeral 12 denotes a plurality of filters inserted into the molecular sieve 8 at appropriate intervals.

In this embodiment, the refrigerant flowing from the inlet 1a passes through the coarse filter 4 on the inlet side, and the water and the acid are further removed by the molecular sieve 8. Further, the powder generated by the breakage of the crystal of the molecular sieve 8 and dust in the refrigerant are removed by the plurality of filters 12, but this filter 12 starts to be clogged from the inlet 1a side. When the clogging of the filter 12 becomes severe, the refrigerant flows avoiding the filter 12 and causes a similar change in the flow of the refrigerant in the next filter 12. Dust and the like in the refrigerant hardly enter the outlet side fine filter 6 and the capillary tube 3.

FIG. 6 shows a sixth embodiment of the present invention, in which 13 is an inlet-side coupling, 14 is an outlet-side coupling, and the inlet side coarse filter 4,
The molecular sieve 8 and the outlet side fine filter 6 are sequentially mounted.

In such a configuration, the cylindrical case 1 of the dryer main body is connected to the refrigerant pipe by the inlet-side coupling 13 and the outlet-side coupling 14, and is connected to the inlet-side coupling.
Moisture and acid of the refrigerant entering from 13 are molecular sieve 8
The powder generated by the breakage of the molecular sieve 8 crystals contained in the refrigerant and the dust in the refrigerant is removed by the outlet side fine filter 6.

FIG. 7 shows a seventh embodiment of the present invention. Reference numeral 15 denotes a press-fit refrigerant, which is sealed by the cylindrical case 1, the inlet-side coupling 13 and the outlet-side coupling 14.

In the dryer configured as described above, when replacement of the dryer is required, the refrigerant system can be removed in a sealed state by removing the inlet-side coupling 13 and the outlet-side coupling 14. Can be. In addition, since the newly installed dryer already contains the press-in refrigerant 15, the refrigerant system does not need to discharge the refrigerant and evacuate, and a new dryer can be mounted.

FIG. 8 shows an eighth embodiment of the present invention, in which a cylindrical case 1 having an inlet 1a through which a refrigerant flows and an outlet 1b through which a refrigerant flows out is formed. A rectifying plate 16, an inlet-side coarse filter 4, a molecular sieve 8, and an outlet-side fine filter 6 are sequentially mounted from the inlet 1a.

In the above configuration, the refrigerant flows in from the inlet 1a, and the flow is restricted by the flow regulating plate 16. As a result, a stagnation occurs in the flow of the refrigerant, and between the inlet portion 1a and the rectifying plate 16,
Dust in the refrigerant easily accumulates. Further, the water and acid are removed from the refrigerant by the molecular sieve 8, and the refrigerant flows out from the outlet 1b.

[0034]

As described above, according to the present invention, a cylindrical case having an inlet portion through which a refrigerant flows in and an outlet portion through which the refrigerant flows out, an inlet-side coarse filter and an outlet in the cylindrical case. A side fine filter is installed, and a coarse partition plate is provided between the inlet side coarse filter and the outlet side fine filter,
By filling the upper part with a molecular sieve and filling the lower part with a space or a medium filter layer, it is possible to provide a dryer that is free from clogging with molecular sieve powder or insoluble substances in a short period of time.

Further, according to the present invention, a cylindrical case having an inlet portion through which the refrigerant flows in and an outlet portion through which the refrigerant flows out, and a middle mesh between the inlet side coarse filter and the outlet side fine filter in the cylindrical case. by Rukoto provided with a layer of the filter,
Does not clog in a short time.

[0036]

[0037]

[0038]

[Brief description of the drawings]

FIG. 1 is a side sectional view of a dryer according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a dryer according to a second embodiment of the present invention.

FIG. 3 is a side sectional view of a dryer according to a third embodiment of the present invention.

FIG. 4 is a side sectional view of a dryer according to a fourth embodiment of the present invention.

FIG. 5 is a side sectional view of a dryer according to a fifth embodiment of the present invention.

FIG. 6 is a side sectional view of a dryer according to a sixth embodiment of the present invention.

FIG. 7 is a side sectional view of a dryer according to a seventh embodiment of the present invention.

FIG. 8 is a side sectional view of a dryer according to an eighth embodiment of the present invention.

FIG. 9 is a side sectional view of a conventional dryer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cylindrical case, 1a ... Inlet part, 1b ... Outlet part, 4
… Inlet side coarse filter, 6… Outlet side fine filter, 8… Molecular sieve, 9… Coarse partition plate, 10…
Space, 11… medium filter layer, 12… filter,
13… Inlet side coupling, 14… Outlet side coupling,
15 ... Press-fit refrigerant, 16 ... Rectifier plate.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takahiro Inoue 3-22, Takaidahondori, Higashiosaka-shi, Osaka Matsushita Refrigerating Machinery Co., Ltd. (56) References Japanese Utility Model 1-106866 (JP, U) Japanese Utility Model 4-52918 (JP, U) Jikken Sho 53-11894 (JP, Y2) Jigyo 37-1190 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25B 43/00

Claims (2)

(57) [Claims] A cylindrical case having an inlet portion through which a refrigerant flows in and an outlet portion through which the refrigerant flows out; an inlet-side coarse filter mounted on the inlet side in the cylindrical case;
An outlet-side fine filter mounted on the outlet side in the cylindrical case, vertically partitions between the inlet-side coarse filter and the outlet-side fine filter, and a refrigerant on the lower inlet-side coarse filter side. A drier comprising: a coarse partition plate having an inflow shielding plate; and a molecular sieve filled between the inlet side coarse filter and the outlet side fine filter above the coarse partition plate. 2. The dryer according to claim 1, further comprising a medium filter layer between the inlet coarse filter and the outlet fine filter below the coarse partition plate.